On Sun, Dec 28, 2025 at 6:08 PM Peter Maydell <[email protected]> wrote:
>
> On Tue, 23 Dec 2025 at 22:37, Ruslan Ruslichenko
> <[email protected]> wrote:
> >
> > From: Ruslan Ruslichenko <[email protected]>
> >
> > Some platforms use combined irq type, in which case
> > only single interrupt line is used, instead of 4
> > different irq's for each type.
> >
> > Add emulation support for combined irq mode.
> >
> > This mode can be selected by platforms by setting
> > 'combined_irq' property.
>
> Which platforms?

As I can see in ML Linux there is currently at least one platform
using such mode:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/xilinx/versal-net.dtsi#n1010

In our case we are working to emulate Renesas R-Car X5H SoC, which may
also use this configuration.

>
> The other way to approach this would be to have the
> relevant SoC/platform models create a TYPE_OR_IRQ
> or gate to wire the interrupts together.

Thank you for suggestion! We will try to implement this approach instead.

>
> thanks
> -- PMM

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